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| author | Michael Gottesman <mgottesman@apple.com> | 2013-12-14 02:24:22 +0000 |
|---|---|---|
| committer | Michael Gottesman <mgottesman@apple.com> | 2013-12-14 02:24:22 +0000 |
| commit | 8f17dccdcb1dbfceaaf5b14ee1186c76b0584a35 (patch) | |
| tree | 0eeffa6c2ca025187899327ae58e40b3880833ca /llvm/unittests/Support/BlockFrequencyTest.cpp | |
| parent | 0f7f222c59c8673862aa4272803e84a05d9b925d (diff) | |
| download | bcm5719-llvm-8f17dccdcb1dbfceaaf5b14ee1186c76b0584a35.tar.gz bcm5719-llvm-8f17dccdcb1dbfceaaf5b14ee1186c76b0584a35.zip | |
[block-freq] Add a right shift to BlockFrequency that saturates at 1.
llvm-svn: 197302
Diffstat (limited to 'llvm/unittests/Support/BlockFrequencyTest.cpp')
| -rw-r--r-- | llvm/unittests/Support/BlockFrequencyTest.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/unittests/Support/BlockFrequencyTest.cpp b/llvm/unittests/Support/BlockFrequencyTest.cpp index ffdea2c1790..c3184515046 100644 --- a/llvm/unittests/Support/BlockFrequencyTest.cpp +++ b/llvm/unittests/Support/BlockFrequencyTest.cpp @@ -237,4 +237,12 @@ TEST(BlockFrequencyTest, ProbabilityCompare) { EXPECT_FALSE(BigZero >= BigOne); } +TEST(BlockFrequencyTest, SaturatingRightShift) { + BlockFrequency Freq(0x10080ULL); + Freq >>= 2; + EXPECT_EQ(Freq.getFrequency(), 0x4020ULL); + Freq >>= 20; + EXPECT_EQ(Freq.getFrequency(), 0x1ULL); +} + } |
